日志输出到文件，按照时间来进行输出

梦里梦外; 2023-08-17 16:47 32阅读 0赞

log4j.rootLogger=INFO,console,file
    log4j.rootLogger=DEBUG,console,file
    
    
    log4j.appender.console=org.apache.log4j.ConsoleAppender
    log4j.appender.console.Target=System.out
    log4j.appender.console.layout=org.apache.log4j.PatternLayout
    log4j.appender.console.layout.ConversionPattern=#%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p %-5c[%L] -> %m%n
    log4j.appender.console.layout.ConversionPattern=%-5p %d{yyyy-MM-dd HH:mm:ss,SSS} -> %m%n
    
    log4j.appender.file=org.apache.log4j.DailyRollingFileAppender
    log4j.appender.file.File=D://LOGS//log
    log4j.appender.file.DatePattern=_yyyyMMdd'.log'
    log4j.appender.file.encoding=UTF-8
    log4j.appender.file.layout=org.apache.log4j.PatternLayout
    log4j.appender.file.layout.ConversionPattern=%d{HH:mm:ss,SSS} %p - %m%n

log4j.rootLogger=INFO,console,file  
log4j.rootLogger=DEBUG,console,file

这个里面的INFO 是输出的级别

console 和file是输出的方式，包括控制台和文件输出两种方式

log4j.appender.file.File=D://LOGS//log

是文件输出的地址

package frame.test;
    
    import org.apache.log4j.Logger;
    import org.junit.Test;
    
    public class MyTest {
    
    	private Logger logger = Logger.getLogger(MyTest.class);
    
    	@Test
    	public void test() {
    		logger.debug("nihao");
    		logger.info("nihao");
    		System.out.println("你好");
    
    	}
    
    }

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希望对你有所帮助

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